2003-03-05 Proposed Ditch Cleanout
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3535 Vadnais Center Drive, St. Paul, MN 55110-5196
651.490.2000
651.490.2150 FAX
architecture
engineering
environmental
transportation
March 5, 2003
RE: Albertville, Minnesota
Proposed Ditch Cleanout
SEH No. A-ALBEV0301.00
Mr. Pete Carlson
City Engineer
City of Albertville
5975 Main Avenue NE
Albertville, MN 55301
Dear Mr. Carlson:
The Technical Evaluation Panel (TEP) has recommended and approved No-Loss Certification for
the proposed ditch cleanout. The ditch cleanout is within the area between the southeast corner of
the Albertville Outlet Mall and east to School Lake.
The enclosed No-Loss Certification and associated documentation is authorization for the proposed
ditch cleanout within the specified area. In addition, the TEP recommends use of BMPs (such as a
floating silt curtain) to minimize impacts to School Lake from the cleanout process.
If you have any questions, please contact me.
Sincerely,
Todd Udvig
Senior Scientist
sab
Enclosure
c: Linda Goeb, City of Albertville
x:\ae\albev\030 lOO\correspondence\carlson022603.doc
Short Elliott Hendrickson Inc.
Your Trusted Resource
Equal Opportunity Employer
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MEMORANDUM
3535 Vadnais Center Drive, 51. Paul, MN 55110-5196
651.490.2000 800.325.2055
651.490.2150 FAX
TO:
Pete Carlson
FROM:
Deric Deuschle
DATE:
December 17, 2002
RE:
CR 19 Ditch cleaning
SEH No. AALBEV0301.00
On Tuesday, December 10, 2002 an investigation was done to examine the sediment
accumulation in a created ditch extending from a large Type 3 wetland, under County Road 19,
and into School Lake (herein referred to as the ditch). It is my understanding that the City of
Albertville desires to clean out this ditch to the original elevations as allowed for maintenance
under the Wetlands Conservation Act. This investigation is being completed as the original ditch
design elevations are not known. Following is a summary of the methods used to determine the
approximate ditch bottom elevations and the results.
Methods
The ditch is currently at low flow, which makes sampling relatively easy. Although the channel
is a classic ditch, there was some variability of depth and flow characteristics. The main
channel, for lack of a better term, does go through a sequence of pools and runs and does
meander through the ditch bottom. There was still some flow, but almost all of the ditch is
frozen and has several inches of ice. There was flowing water beneath the ice and sediment
sampling was not affected by the conditions.
To measure the accumulated sediment, several test pits and cross sections were sampled. The
depth of water and ice was measured and a soil profile was taken. The sample locations were
later surveyed to determine either the existing ground or water elevation. Approximate bottom
elevations were calculated by subtracting the depth of the accumulated material from the known
elevation.
Results
Soils in the ditch and surrounding upland were generally consistent. Upland soils were typically
23 to 26 inches of lOYR 2/2 clay loam atop a undetermined thickness of gleyed clay with
mottles (4/5GY with 5YR3/4 mottles). The surface layer was generally hard packed and had
little organic content. The depth to the gleyed clay was consistent but had a wide transition area
from the above layers.
Samples taken from within the ditch were also consistent with each other. Depth of water and
ice varied, but sediment was usually a thin (1-2 inches) surface layer of fine particles, debris, and
small amounts of coarse sand in some spots. This layer was very loose, and easily disturbed.
Short Elliott Hendrickson Inc.
Your Trusted Resource
Equal Opportunity Employer
CR 19 Ditch cleaning
December 17, 2002
Page 2
Beneath this layer was a soft layer of clay loam. This layer was usually lOYR2/2, and often had
some clay inclusions (5Y4/1). The material was very soft and tended to have a high organic
content. This layer was similar to much of the material along the banks of the ditch. The
material that has accumulated in the ditch is a much finer material than expected. There was
little or no coarse material present in the system. We suspect that much of the accumulated
material is actually caused from excessive bank erosion rather than transported material or
bedload. This would explain some of the similarities of the materials.
It was determined that the original excavation elevation was at the transition of the dark brown
clay loam and the gleyed clay. This is based on the appearance of the gleyed clay layer in the
upland areas at roughly the same elevation and the sharp transition between the two layers. This
contrast is not as distinct in the upland suggesting that the original excavation to create the ditch
cut into the gleyed layer.
From the known surface elevations and soil profiles, a determination was made of where the
original elevations were. Sediment accumulations ranges from 0.58 feet to 1.92 feet. This is
based somewhat on location as the shallower accumulations are all on the edges of the ditch.
This is further evidence that the original ditch may have been narrower and that on-site erosion is
a contributing factor in the ditch deposits.
Conclusion
In general, removal of as much as 1 to 1.5 feet of material should be considered for maintenance
but only to the depth of the gleyed clay which appears to be the approximate bottom. This will
vary some by location, both longitudinally and across the channel. We would sugest that the
channel characteristics remain diverse with both shallow and deeper habitats and that
meandering of a main channel be encouraged. If the culvert elevation is not changed we do not
believe that maintenance of this ditch will affect the large cattail marsh on the west side of TH19
by drainage. We would suggest continuing to leave a slope out from the culvert and discourage
leaving a hanging outlet. Erosion control measures should be incorporated to prevent material
generated during the excavation from entering School Lake.
The results by location are summarized on the enclosed table and figures. Please call me if you
have specific questions on the project.
drd
Enclosure
c: Todd Udvig,
x:\aclalbevI030100lmisc. eng. svcs\melIDrandumdoc
Table 1 Soil Boring Data. See Figures For Graphical Representation
Water/ice
Location depth Surface Original Amount to
ID Northing Easting (inches) Elevation Elevation Excavate (feet)
1 196909.406 556754.295 4.0 948.01 946.76 1.25
2 196931.542 556836.286 4.0 948.33 947.33 1.00
3 196926.138 556832.694 6.5 947.74 946.66 1.08
4 196921.692 556829.291 5.0 947.77 946.85 0.92
5 196872.003 556977.540 3.5 948.35 947.77 0.58
6 196867.788 556973.786 12.5 946.98 945.15 1.83
7 196864.807 556971.869 6.0 948.05 946.21 1.83
8 196793.753 557093.786 5.0 948.01 946.35 1.67
9 196789.480 557091.384 18.0 946.81 944.90 1.92
10 196886.563 556611 .982 9.5 948.21 946.38 1.83
11 196883.724 556592.816 9.0 948.59 946.80 1.79
Minnesota Wetland Conservation Act
APPLICATION FOR
CERTIFICATE OF NO LOSS OR EXEMPTION*
APPLICANT AND PROJECT LOCATION INFORMATION
e;~/ of A-tbprtv~ Ile-
Name(s) of Applicant
t71,::rs- Mq~f") .AhJe- }..lE,
Street Address
A-\ be_rhJI lle..-) MJJ
City, State, Zip Code
5'530 I
LGU: i a~ '0 'J,'/L
ProjectLocaf n: 1/4_1/4_S~TJd).Af R.,;)~-W
UTM Coordinates: X: Y:
County NameJNumber: t,d I' <q k.'l""'
Minor Watershed NameJNuml'jer:
Size of entire wetland: > / () acres
Wetland type: Circular 39 .3 ; NWI PEM e elL
Check one: 9 <50% 9 50%-80% or 9 > 80%
Check one: 9 Agricultural land; 9 Non-ag. land
(1-&3) LfCf'+- - 33tg4 (
Telephone (Day)
)
(Evening)
PROPOSED PROJECT !.}ESCR TI
DesC}:ibe the nature a~purpose of.the proposed project: e/-A ~
J '.-1J'.,j-, '^ "'
@OI t1 ^ ex. I I c- e-
Mcll \. e'C1 \/ IVVVC"" /.0 5(' ~ Dr. I /-co Ir p J7'" ~.,., {)J/ I ~.s
p" C\. -\-e.r ; C( \ ,
(attach additional pages if needed)
The wetland activity at the above site qualifies for the following under the Wetland Conservation Act (WCA) (check one):
X No Loss Determination (attach plans)
Exemption # (per MN Rule Chapter 8420.0122) (Note: Applicant is responsible for submitting the proof
necessary to show qualification for the exemption claimed.)
Description of Exemption Claimed:
APPLICANT SIGNATURE
The information provided for this determination is truthful and accurate to the best of my knowledge. I ensure that, in draining
or filling the subject wetland under an exemption noted above, appropriate erosion control measures will be taken to prevent
sedimentation of the water, the drain or fill will not block fish passage, and the drain or fill will be conducted in compliance
with all other applicable federal, state and local requirements, including best management practices and water resource
protection requirements established under Minnesota Statutes, Chapter 103H.
(Signature of Applicant)
(Date)
Certificate of No-Loss or Exemption (2000)
Page I of2
Note: Any approval is not effective until signatures below are complete. No work should begin until the IS-day appeal
window has lapsed, or, in the event of an appeal, until the appeal has been finalized.
FOR LGU USE ONLY
A.) LGU has received adequate documentation for claim of No-Loss or Exemption, and approves this certificate as outlined
~,.
(LG
,J
ature)
313/03
(Date)
This certificate expires 3 /:J J / tJ.3
(Date)
9Is certificate for an exemption under M.R. 8420.0122, Subpart 1 or Subpart 2, Item B? LOU sign below.
9If not, signature above is sufficient, and certificate is complete. LOU write ANot Applicable=: in signature block below.
B.) LGU has received evidence of recording of Declaration of Restrictions and Covenants for Impacted Wetland Under
Agricultural Exemption (BWSR Form B):
(County where recorded)
(Date recorded)
(Document # assigned by recorder)
(LGU Official Si ature)
(Date)
*APPROVAL OF THIS CERTIFICATE ONLY APPLIES TO THE WCA. Permitsfrom local, state, andfederal agencies
may be required. Check with the appropriate authorities before commencing work in or near wetlands. The Combined Project
Application form can be used for this purpose.
Within 10 days of the decision, notice of the above decision must be mailed to:
Landowner/Applicant
Members of the Technical Evaluation Panel
Department of Natural Resources Regional Office
DNR Wetlands Coordinator @
Ecological Services Section
500 Lafayette Road, Box 25
St. Paul, MN 55155
Corps of Engineers Project Manager @
Department of the Army, Corps of Engineers, St. Paul District
ATTN: CO-R, 190 Fifth Street East
St. Paul, MN 55101-1638
Members of the public who have requested to receive notice.
Certificate of No-Loss or Exemption (2000)
Page 2 of2